CHAPTER XII. THE XERVOUfc SYSTEM.
BEFORE we proceed to the consideration of the system, which co-ordinates the activities of the organs, and brings the animal into relation with its environment, it will be useful to tabulate conclusions drawn f:o:r: the preceding chapters:—
t'l) The general anatomical structure ana the bie-chemical reactions of the blood show that Han and the Apes are related. And pathological observations demonstrate that their constitutions have much in common.
(2) The ductless glands have helped to mould their external characters.
(3) A host of structural differences in all parts of the body are associated with the type of locomotion in each animal.
(4) Man is the most biraanous and the most bipedal of the Primates, and he stands alone in the power of speech.
It now remains for us to see how the brain, which makes all the organs work together in harmony, differs in the Apes and Man.
Section A.—THE BBAIK.
General Characters.—The brain of the Gorilla, whose volume exceeds that of any other Anthropoid, is 18